cannot import name 'escape' from 'jinja2'

[olicc16]

I tried to build this demo from Mac computer with macOS Catalina Version 10.15.7, and it failed. The message says:

Starting demo_app_1 ... done
Attaching to demo_app_1
app_1 | Traceback (most recent call last):
app_1 | File "app.py", line 12, in
app_1 | from flask import Flask, render_template, jsonify, request
app_1 | File "/usr/local/lib/python3.7/site-packages/flask/init.py", line 14, in
app_1 | from jinja2 import escape
app_1 | ImportError: cannot import name 'escape' from 'jinja2' (/usr/local/lib/python3.7/site-packages/jinja2/init.py)
demo_app_1 exited with code 1

Is it caused by OS or some package dependencies? Thanks!

[micahcarroll]

This seems related. I'm not sure what is causing the issue here as I'm not very familiar with this portion of the stack of the code – the requirements.txt file has specific versions required (which should obviate this bug), but I'm not sure how that interacts with Docker or the rest of the code.

We'll be hiring a research engineer soon who can hopefully address this (and other) concerns!

[dvrijenhoek]

I've had the same issue, updating the versions of some of the dependencies seemed to have done the trick. Included you'll find the updated requirements.txt which hopefully works for you too.
requirements.txt

[alexlichtenstein]

Update been done #35